-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emits the callbacks after NetworkLink State changed
- * @details Callback functions have the following signature: `void(NetworkLinkActionPtr action, e_surf_resource_state_t old, e_surf_resource_state_t current)`
- */
-XBT_PUBLIC_DATA( surf_callback(void, NetworkLinkPtr, e_surf_resource_state_t, e_surf_resource_state_t)) networkLinkStateChangedCallbacks;
-
-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emits the callbacks after NetworkAction State changed
- * @details Callback functions have the following signature: `void(NetworkActionPtr action, e_surf_action_state_t old, e_surf_action_state_t current)`
- */
-XBT_PUBLIC_DATA( surf_callback(void, NetworkActionPtr, e_surf_action_state_t, e_surf_action_state_t)) networkActionStateChangedCallbacks;
+/** @brief Callback signal fired when a NetworkAction is created (when a communication starts)
+ * Signature: `void(NetworkAction *action, RoutingEdge *src, RoutingEdge *dst, double size, double rate)` */
+XBT_PUBLIC_DATA(simgrid::surf::signal<void(simgrid::surf::NetworkAction*, simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst, double size, double rate)>) networkCommunicateCallbacks;